There has been a surprising balance of power shift in the AFC this season, leaving some defending division champions with plenty of work to do in order to reach the postseason.
Last season, the four division winners from the AFC -- Kansas City Chiefs, Baltimore Ravens, Houston Texans and Buffalo Bills -- were the last teams standing in the playoffs from the conference. Now, entering Week 12, none of them leads its division, and the Chiefs, the Ravens and the Texans all share disappointing 5-5 records and would not qualify for the playoffs if the season ended today.